| A | B |
|---|
| a fortiori | with even stronger reason |
| a posteriori | reasoning based on past experience or from effects to causes |
| a priori | deductive reasoning or from causes to effects |
| ab initio | from the beginning |
| ad hoc | improvised |
| ad infinitum | to infinity, or without end |
| ad lib | at will, off the top of the head |
| ante meridiem | before noon A.M. |
| antebellum | before the war, especially the American Civil War |
| circa (c. or ca) | approximately, usually used with dates |
| de facto | from the fact, existing by fact |
| de jure | from the law, so existing by right |
| ex post facto | after the fact, so retrospectively |
| in memoriam | in the memory of a person |
| in situ | in its original or appointed place |
| in toto | in its entirety |
| in vitro | in a glass |
| inter alia | among other things |
| per capita | per head (person) |
| per diem | per day, usually expenses allowed each day |
| post meridiem | after noon (P. M.) |
| postmortem | after death, an examination into the cause of death |
| pro rata | in proportion |
| sine die | without a day, with no time fixed for the next meeting |
| sine qua non | without which not, hence an essential precondition for something |
